[英]Elixir Absinthe Instrumentation
I'm looking to instrument my absinthe/phoenix server.我正在寻找我的苦艾酒/凤凰服务器。 I would like to find out how long it takes to encode data as json using Jason.我想知道使用 Jason 将数据编码为 json 需要多长时间。
My endpoint.ex
file looks like following:我的endpoint.ex
文件如下所示:
defmodule AssessmentApi.Web.Endpoint do
use Phoenix.Endpoint, otp_app: :assessment_api
socket "/socket", AssessmentApi.Web.UserSocket
# Serve at "/" the static files from "priv/static" directory.
#
# You should set gzip to true if you are running phoenix.digest
# when deploying your static files in production.
plug Plug.Static,
at: "/", from: :assessment_api, gzip: false,
only: ~w(css fonts images js favicon.ico robots.txt)
if code_reloading? do
socket "/phoenix/live_reload/socket", Phoenix.LiveReloader.Socket
plug Phoenix.LiveReloader
plug Phoenix.CodeReloader
end
plug Plug.RequestId
plug Plug.Logger
plug Plug.Parsers,
parsers: [:urlencoded, :multipart, :json, Absinthe.Plug.Parser],
pass: ["*/*"],
json_decoder: Jason
plug Plug.MethodOverride
plug Plug.Head
# The session will be stored in the cookie and signed,
# this means its contents can be read but not tampered with.
# Set :encryption_salt if you would also like to encrypt it.
plug Plug.Session,
store: :cookie,
key: "adfadfasdfasdfadsf",
signing_salt: "asdsfasdfasdfasdf"
plug CORSPlug
plug AssessmentApi.Web.Logger
plug AssessmentApi.Web.Router
end
And my router.ex
looks like the following:我的router.ex
如下所示:
defmodule AssessmentApi.Web.Router do
use AssessmentApi.Web, :router
pipeline :api do
plug AssessmentApi.Guardian.AuthPipeline
plug :accepts, ["json"]
end
scope "/" do
pipe_through :api
forward "/api", Absinthe.Plug,
schema: AssessmentApi.Web.Schema,
json_codec: Jason
forward "/graphiql", Absinthe.Plug.GraphiQL,
schema: AssessmentApi.Web.Schema,
json_codec: Jason
end
end
How do I instrument the json_decoder portion of the application to find out how long it takes to make json out of the response data?如何检测应用程序的 json_decoder 部分,以了解从响应数据中提取 json 需要多长时间? Maybe using telemetry?也许使用遥测?
Thanks谢谢
If it is just the encoding of JSON you could add a custom module for it.如果只是 JSON 的编码,您可以为其添加自定义模块。
defmodule InstrumentedJason do
def encode!(body, opts) do
:telemetry.span(
[:your_app, :encode_absinthe_result],
%{},
fn ->
result = Jason.encode!(body, opts)
{result, %{}}
end
)
end
end
# router.ex
forward "/api", Absinthe.Plug,
schema: AssessmentApi.Web.Schema,
json_codec: InstrumentedJason
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.